What about rapeseed worms?

Rape is a common green vegetable, and it has the effects of moistening the lungs and lowering cholesterol, so it has become the first choice for many farmers. what if rape and wheat become worms?

I. aphids

The effective control method is to remove weeds in and around the field in time to protect the natural enemies of aphids, such as ladybugs, aphid flies, spiders, lacewings and so on. Aphids can also be trapped and killed by taking advantage of their phototaxis. The two methods of using natural enemies and phototaxis are both effective and environmentally friendly, which is in line with the development concept of green agriculture. During the initial occurrence of insect pests, 1000 times of aldicarb wettable powder, or 3000 times of 10% aldicarb, or 1000 times of 10% Leibao emulsion can be sprayed and controlled, once every 7-8 days for 2-3 times. It is recommended that several solutions be used alternately to prevent pests from producing drug resistance and affect the insecticidal effect.

2. Thrips

Thrips mainly harm the leaves and young parts of rape, it has no obvious dormancy period, but can be damaged all the year round. After the plant is damaged by thrips, the leaves first appear yellow-white spots, which is formed because it absorbs the sap of the leaves. When the harm is serious, the whole blade begins to curl and twist, affecting the quality and reducing the income. Chemical control can be used, adding prevention and control agents in watering to do a good job in daily prevention, harm can be increased concentration spraying treatment.

Downy mildew

The prevention and control of downy mildew should follow the principle of agricultural control and drug control. The land with high or flat terrain, loose soil, less disease and low incidence should be selected as far as possible to improve the ability of irrigation and drainage. Selecting disease-resistant varieties, reasonably controlling cultivation density, replenishing seedlings with suitable time, timely ploughing and weeding, improving the permeability between plants, and conducive to daylighting and air permeability. In case of continuous overcast and rainy days or more seasons of Rain Water, drainage and waterlogging should be done in time to reduce the humidity in the field. Small watering is required, and heavy flooding is strictly prohibited. Increase the application of organic base fertilizer, balanced fertilization, so as to achieve no partial application, less application, excessive fertilization. After the onset of the disease, you can use 75% chlorothalonil wettable powder 500 times liquid, or 69% enoyl manganese zinc wettable powder 800 times liquid spray, 7-8 days spray, continuous spray 2-3 times, can play a better control effect.

The cultivation of rape is relatively simple, and it is best to choose varieties with strong disease resistance.